package com.chixing.day07.JiChengDemo;

public class Son extends Father {
    public void s1() {
    }

    public void s2() {
    }

    public void s3() {
    }

    @Override
    public void f3() {
    }

    @Override
    protected Object clone() throws CloneNotSupportedException {
        return null;
    }
}
